/* AI Knowledge Chatbot - Frontend Widget */

:root {
    --aikb-primary: #2563eb;
    --aikb-primary-dark: #1d4ed8;
    --aikb-bg: #ffffff;
    --aikb-surface: #f8fafc;
    --aikb-border: #e2e8f0;
    --aikb-text: #1e293b;
    --aikb-text-light: #64748b;
    --aikb-radius: 16px;
    --aikb-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}

/* ── Floating shell ────────────────────────────── */

#aikb-chatbot-widget.aikb-widget-shell {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    position: fixed;
    z-index: 99999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#aikb-chatbot-widget.aikb-pos-bottom-right { right: 24px; bottom: 24px; align-items: flex-end; }
#aikb-chatbot-widget.aikb-pos-bottom-left { left: 24px; bottom: 24px; align-items: flex-start; }
#aikb-chatbot-widget.aikb-pos-top-right { right: 24px; top: 24px; align-items: flex-end; }
#aikb-chatbot-widget.aikb-pos-top-left { left: 24px; top: 24px; align-items: flex-start; }
#aikb-chatbot-widget.aikb-pos-middle-right { right: 24px; top: 50%; transform: translateY(-50%); align-items: flex-end; }
#aikb-chatbot-widget.aikb-pos-middle-left { left: 24px; top: 50%; transform: translateY(-50%); align-items: flex-start; }
#aikb-chatbot-widget.aikb-pos-bottom-center { left: 50%; bottom: 24px; transform: translateX(-50%); align-items: center; }
#aikb-chatbot-widget.aikb-pos-top-center { left: 50%; top: 24px; transform: translateX(-50%); align-items: center; }

/* Make sure chatbot bubble is always visible,
   but panel is hidden/shown by js by toggling [hidden] attribute.
   Bubble button visibility is also toggled by script via [hidden].
*/

.aikb-bubble-btn {
    width: 60px;
    height: 60px;
    border-radius: 999px;
    border: 0;
    background: var(--aikb-primary);
    color: #fff;
    box-shadow: var(--aikb-shadow);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, background 0.2s ease;
    padding: 0;
}

.aikb-bubble-btn[aria-expanded="true"] {
    display: none;
}

.aikb-bubble-btn[hidden] {
    display: none !important;
}

.aikb-bubble-btn:hover {
    background: var(--aikb-primary-dark);
    transform: scale(1.04);
}

.aikb-bubble-btn:focus-visible,
.aikb-close-btn:focus-visible {
    outline: 2px solid var(--aikb-primary-dark);
    outline-offset: 2px;
    background-color: var(--aikb-primary-dark);
}

.aikb-bubble-icon {
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.aikb-bubble-btn-img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    display: block;
    pointer-events: none;
}

.aikb-bubble-icon svg {
    width: 24px;
    height: 24px;
}

.aikb-chat-panel {
    width: min(380px, calc(100vw - 32px));
    max-height: min(720px, calc(100vh - 120px));
    /* display: flex; */
    flex-direction: column;
    background: var(--aikb-bg);
    border-radius: var(--aikb-radius);
    box-shadow: var(--aikb-shadow);
    border: 1px solid var(--aikb-border);
    overflow: hidden;
}

.aikb-chat-panel[hidden] {
    display: none !important;
}

.aikb-panel-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 8px 0;
    background: var(--aikb-bg);
}

.aikb-panel-topbar h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--aikb-text);
    line-height: 1.3;
}

.aikb-close-btn {
    width: 32px;
    height: 32px;
    background: var(--aikb-bg);
    color: var(--aikb-text-light);
    cursor: pointer;
    font-size: 22px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    outline: none;
    padding: 0;
    margin: 0;
}

.aikb-close-btn:hover {
    color: var(--aikb-text);
    background: transparent;
}

.aikb-close-btn[hidden] {
    display: none !important;
}

/* ── Header ────────────────────────────────────── */

.aikb-header {
    background: var(--aikb-primary);
    color: #fff;
    padding: 20px 24px;
}

.aikb-header h3 {
    margin: 0 0 4px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
}

.aikb-header p {
    margin: 0;
    font-size: 13px;
    opacity: 0.85;
    color: #fff;
}

/* ── Lead form ─────────────────────────────────── */

.aikb-lead-form {
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.aikb-lead-form label {
    font-size: 13px;
    font-weight: 600;
    color: var(--aikb-text);
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.aikb-lead-form input {
    padding: 10px 14px;
    border: 1px solid var(--aikb-border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
    background: var(--aikb-bg);
    color: var(--aikb-text);
    width: 100%;
    box-sizing: border-box;
}

.aikb-lead-form input:focus {
    border-color: var(--aikb-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.aikb-lead-btn {
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: var(--aikb-primary);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 4px;
}

.aikb-lead-btn:hover {
    background: var(--aikb-primary-dark);
}

.aikb-lead-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.aikb-lead-error {
    color: #dc2626;
    font-size: 12px;
    min-height: 16px;
}

/* ── Messages area ─────────────────────────────── */

.aikb-messages {
    flex: 1;
    min-height: 280px;
    max-height: 420px;
    overflow-y: auto;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--aikb-surface);
}

.aikb-messages::-webkit-scrollbar {
    width: 6px;
}
.aikb-messages::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

.aikb-msg {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.55;
    word-wrap: break-word;
    white-space: pre-wrap;
}

.aikb-msg.user {
    background: var(--aikb-primary);
    color: #fff;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.aikb-msg.assistant {
    background: var(--aikb-bg);
    color: var(--aikb-text);
    align-self: flex-start;
    border: 1px solid var(--aikb-border);
    border-bottom-left-radius: 4px;
    text-align: left;
}

.aikb-msg.system {
    font-size: 13px;
    color: var(--aikb-text-light);
    text-align: center;
    align-self: center;
    background: transparent;
    padding: 4px;
}

/* Typing indicator */
.aikb-typing {
    display: flex;
    gap: 5px;
    padding: 12px 16px;
    align-self: flex-start;
    background: var(--aikb-bg);
    border: 1px solid var(--aikb-border);
    border-radius: 12px;
    border-bottom-left-radius: 4px;
}

.aikb-typing span {
    width: 7px;
    height: 7px;
    background: #94a3b8;
    border-radius: 50%;
    animation: aikb-bounce 1.2s infinite;
}

.aikb-typing span:nth-child(2) { animation-delay: 0.15s; }
.aikb-typing span:nth-child(3) { animation-delay: 0.3s; }

@keyframes aikb-bounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-6px); }
}

/* ── Input bar ─────────────────────────────────── */

.aikb-input-bar {
    display: flex;
    gap: 8px;
    padding: 14px 16px;
    border-top: 1px solid var(--aikb-border);
    background: var(--aikb-bg);
}

.aikb-input-bar input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--aikb-border);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    background: var(--aikb-surface);
    color: var(--aikb-text);
}

.aikb-input-bar input:focus {
    border-color: var(--aikb-primary);
}

.aikb-send-btn {
    /* width: 40px; */
    height: 40px;
    border: none;
    border-radius: 8px;
    background: var(--aikb-primary);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    flex-shrink: 0;
}

.aikb-send-btn:hover { background: var(--aikb-primary-dark); }
.aikb-send-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.aikb-send-btn svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* ── Powered by ────────────────────────────────── */

.aikb-footer {
    text-align: center;
    padding: 6px;
    font-size: 11px;
    color: var(--aikb-text-light);
    background: var(--aikb-surface);
    border-top: 1px solid var(--aikb-border);
}

/* ── Responsive ────────────────────────────────── */

@media (max-width: 600px) {
    #aikb-chatbot-widget.aikb-widget-shell {
        right: 12px !important;
        left: 12px !important;
        bottom: 12px !important;
        top: auto !important;
        transform: none !important;
        align-items: flex-end;
    }

    .aikb-chat-panel {
        width: 100%;
        max-height: calc(100vh - 100px);
    }

    .aikb-bubble-btn {
        width: 56px;
        height: 56px;
    }
}